MESON Chess Problem Database

Problem Display
PID: 83835 (8/6b1/4r3/1p6/8/1Kp1p3/2R3NR/3k2N1 w - - 0 1)

Degener, Udo

Schweizerische Schachzeitung, 1985

8/6b1/4r3/1p6/8/1Kp1p3/2R3NR/3k2N1

#2

5 + 6

6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Se2?
      • threat
        • 2.Rh1#
      • 1...Rf6
        • 2.Sxc3#
      • 1...Rh6!
    • 1.Sf3?
      • threat
        • 2.Rh1#
      • 1...Rh6
        • 2.Sxe3#
      • 1...e2!
    • 1.Sh3?
      • threat
        • 2.Rh1#
      • 1...e2
        • 2.Sf2#
      • 1...Rf6!
    • 1.Sxe3+?
      • 1...Ke1
        • 2.Sf3#
        • 2.Rc1#
        • 2.Rce2#
        • 2.Rhe2#
      • 1...Rxe3!
  • Keys
    • 1.Rh1!
      • threat
        • 2.Se2#
        • 2.Sf3#
        • 2.Sh3#
      • 1...Rf6
        • 2.Sf3#
      • 1...Rh6
        • 2.Sh3#
      • 1...e2
        • 2.Sxe2#

Anticipated by 106975(1969)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • R(D)
      • Vars
        • R(e);S_CUTB(f)::S(A),XP(b)
      • Refutation
        • R(e);
    • Try
      • S(A);
      • Threat
        • R(D)
      • Vars
        • R(e);N_GUARD::S(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • S(A);
      • Threat
        • R(D)
      • Vars
        • P(c);N_GUARD::S(A)
      • Refutation
        • R(e);
    • Try
      • S(C);CHECK,XP(c)
      • Refutation
        • R(e);XS(C)
  • Actual
    • R(D);
    • Threat
      • DUALS(3)
    • Vars
      • R(e);::R(D)+S(A)
      • P(c);::R(D)+S(A),XP(c)
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